Telecommunications Policies: Determinants and Impact

Transcription

1 Document de treball 2003/2: Telecommunications Policies: Determinants and Impact Jordi Gual, Francesc Trillas Institut d'economia de Barcelona Edifici Florensa Adolf Florensa, s/n Barcelona Tel.: Fax: pcb.ub.es/ieb

2 TELECOMMUNICATIONS POLICIES: DETERMINANTS AND IMPACT a,b Jordi Gual, Francesc Trillas c ABSTRACT: This paper presents new data, in the form of four indices, on liberalization policies and the independence of regulators for a cross section of countries. These indices are combined with a comprehensive set of performance, institutional and political data to analyze both the determinants and the impact of telecommunications policies. We find that liberalization policies are negatively associated with the degree to which countries have an interventionist tradition, but not with the partisan ideology of reforming countries per se. We also find that countries where the institutional endowment constrains less the behaviour of the executive bodies, and countries with a stronger incumbent, are more prone to create truly independent regulatory agencies. There is weak evidence that the creation of independent regulatory agencies has a positive effect on network penetration when we take into account the endogeneity of regulatory independence. Keywords: telecommunications, liberalization, institutions JEL Classification: L96, L32, F21. RESUMEN: Este artículo presenta nuevos datos, resumidos en cuatro índices, sobre las políticas de liberalización e independencia de los reguladores para una sección cruzada de países. Estos índices se combinan con un conjunto amplio de datos de resultados, instituciones y variables políticas para analizar tanto los determinantes como el impacto de las políticas de telecomunicaciones. Hallamos que las políticas de liberalización se asocian negativamente con el grado en que los países se caracterizan por una tradición intervencionista, pero no con la ideología partidista de los gobiernos que deciden las reformas. También hallamos que países en los que la dotación institucional limita menos el comportamiento del ejecutivo, y países con una empresa establecida más fuerte, son más proclives a crear agencias reguladoras auténticamente independientes. Existe evidencia débil de que la creación de agencias independientes tiene un efecto positivo sobre el despliegue de redes cuando se tiene en cuenta la endogeneidad de la independencia regulatoria. Palabras clave: telecomunicaciones, liberalización, instituciones Clasificación JEL: L96, L32, F21. a Comments are welcome. The opinions expressed in the paper do not necessarily reflect the IEB's opinions. b We thank Sandra Jódar for excellent research assistance. Support from the Research Centre Public Sector Private Sector at IESE Business School is gratefully acknowledged. We also thank Lars-Hendrik Röller, Jordi Jaumandreu, Joan Ramon Borrell, Daniel Montolio and Astrid Jung for their detailed comments. The paper also benefitted from discussions at a CEPR Workshop in Madrid, at the I International Industrial Organization Conference in Boston, at the Universitat Autònoma de Barcelona, and at the Barcelona Workshop on Industrial and Public Economics (Institut d Economia de Barcelona- Universitat de Barcelona). c Corresponding address: J.Gual: gual@iese.edu / F. Trillas: Francesc.Trillas@uab.es 1

3 1. Introduction The last years of the twentieth century were very rich in reform initiatives in the telecommunications sector. Many countries introduced private ownership of the dominant operators, liberalized at least some segments of the industry and introduced new regulatory authorities. Regulatory reform has, however, many dimensions and takes different forms across countries. The objective of this study is to measure the reform processes taking into account such multi-dimensionality, and to analyze both the determinants and the impact of reform initiatives. We focus on liberalization policies (in particular, the degree to which market opening or deregulation policies are asymmetric, or biased in favour of entrants) and the degree of independence (vis-à-vis their governments) of regulatory authorities. We present four new indices, two for asymmetric deregulation and two for independence. They summarize information on a large number of original variables relevant to these policy areas. Although there is a broad consensus among scholars and international institutions (such as the World Bank, the OECD, the International Telecommunications Union, the European Commission) that opening up the telecommunications sector to competition is both possible and beneficial for social welfare, the precise nature of this liberalization process is still controversial. Many of the controversial issues can be summarized in one question: to what extent should the liberalization policy favour entrants relative to incumbents? In other words, how biased or asymmetric should regulation be in the market-opening phase? Incumbent operators have huge incumbency advantages in most countries and enjoy significant scope economies, since they operate in several segments of the industry. However they also carry the burden of funding universal service and are the main providers of infrastructure. Asymmetric regulation may lead to regulators favouring some competitors rather than more competition, allowing the entry of inefficient firms and imposing unnecessary constraints on incumbents. Something similar happens with the related issue of regulatory independence. Although scholars and international institutions advocate the establishment of independent regulators, there is less debate and consensus on the particular attributes of independent 2

4 regulators and on how to make independence sustainable. On this, we can draw on the academic literature on Central Bank independence, which analyzes the problem using aggregate indices that take into account several dimensions of independence. We take a first step in this direction for telecom regulators. It is an important step in our view, insofar as the previous empirical literature has only measured regulator independence as a binary dummy variable. We evaluate the incidence of policies (asymmetric regulation and regulatory independence) on telecommunications performance, measured by network penetration and productivity. Comparative assessment of telecommunications reform is an active area of research. 1 Our contribution to this growing literature is threefold: First, we put our original indices to work, so that our policy variables and our estimates reflect (for the first time in the case of independence) the fact that both liberalization and regulatory independence are multi-dimensional phenomena. Second, along the lines of the recent empirical literature on political economy, 2 we take into account the potential endogeneity of policies. Third, we use a battery of institutional indices that have not been used in a combined, systematic way in the rest of the literature 3. Through this, we are able to assess the relative explanatory power of each of them, and to relate them to the policies and performance in telecommunications. Among our preliminary results, we find that entry policies are negatively associated with the degree to which countries have an interventionist tradition, but not with the partisan ideology of reforming countries per se. We also find that countries where the institutional endowment 4 constrains less the behaviour of the executive bodies are more prone to create truly independent regulatory agencies. There is weak evidence that the 1 See Ros (2002), Wallsten (2001), Fink et al. (2002), Boylaud and Nicoletti (2000), Li et al. (2002). 2 See Besley and Case (2000), Roller and Duso (2001), Beck et al. (2001). 3 See LaPorta et al. (1999 and 2002), Kaufmann and Kraay (2002), Henisz and Zelner (2000a and b). 4 The institutional endowment is the set of formal or informal rules that constrain the behaviour of citizens in society. Examples of elements of the institutional endowment are whether the system is presidential or parliamentary, the degree of proportionality in the electoral rules, the quality and efficiency of the civil service or the judiciary, etc. (see Levy and Spiller, 1996). 3

5 creation of independent regulatory agencies has a positive effect on network penetration when we take into account the endogeneity of independence. The paper is organized as follows. Section 2 presents the specification strategy, the hypotheses and the relationship with the existing literature. Section 3 describes the data. Section 4 shows and discusses the results obtained with this data set, and we end up with some concluding remarks. 2. Model Specification To analyze the effect of specific telecommunication policies and regulatory institutions on industry performance, we use a simple reduced-form model that relates industry outcomes to a set of supply and demand control variables and the policy and institutional variables of interest (equation (i) below). This specification takes into account the special features of the telecommunications sector. When confronted with the decision to open the industry to competition, the entry barriers faced by new operators are a decisive factor that has to be taken into account. Policy makers may use a number of tools to favour the entrants. Hence the policy variable, measured with an asymmetric deregulation index, will reflect the extent to which telecommunications policies are biased in favour of entrants relative to incumbents (a larger value of the index will indicate a more asymmetric policy). The sign of the parameter corresponding to this policy variable is a matter of controversy. Some authors have criticized the policies that facilitate the entry of new firms, and argued that this policy hurts the performance of the industry since, by constraining the behaviour of the incumbents, economic efficiency is hampered due to the insufficient exploitation of scope economies and the reduction of the pace of innovation. An institutional variable will capture the effect of regulatory independence on industry performance. Since there may be unobserved heterogeneity in the form of policies and institutions being correlated with omitted variables that are also correlated with performance variables, we will also estimate an equation for the policy and institutional variables (equation (ii)). 4

6 The specification we use is the following: (i) q = g (Demand, Costs, Market Structure, s) + ν (ii) s = h (Political Institutions, Interest groups, q -1 ) + u where q are the industry outcomes and s are the policy and institutional variables to be explained. h and g are functions and u and v error terms. The set of variables s includes both market-opening policies and the independence of regulatory institutions. In equation (ii) we include lagged performance variables to take into account the potential causal link between better industry outcomes and better future policies. In equation (i), the original policy variables are considered as potentially endogenous and we use instrumental variables (using the insights gained from the estimation of equarion (ii)) to solve the problem of the correlation of the explanatory variable with the error term. It has been suggested that the use of political variables (following Besley and Case, 2000) as instruments may help to achieve consistent estimators in the presence of endogeneity. Indeed, our specification boils down to tackling the endogeneity issue through the use of instrumental variables, such as political variables, both for policies (in this case, deregulation policies in telecommunications) and regulatory institutions (in this case, the independence of the telecom regulator). 5 In equation (i) it is also very important not to omit any regressor that has a simultaneous and independent influence in policies, regulatory institutions and outcomes (for example, institutional indices of political risk, expropriation risk, political constraints, etc.). In econometric terms, one must have a regressor that is correlated with policies, and use as instrumental variable the part of this variable that explains policies (and 5 Previous studies fail to take into account the endogeneity of policies. However, Röller and Duso (RD, 2002) undertake an insightful exercise using political variables as instruments and find that the results of the previous literature on the effects of deregulation (particularly the OECD studies) are no longer valid. However, they treat regulatory institutions as exogenous, while, at least in telecommunications, they are as endogenous as liberalization policies themselves, and often decided upon at the same time. Moreover, among the variables that explain the policy choice they do not include interest groups, which happen to be an important determinant of liberalization and regulatory reform in other studies (see Henisz and Zelner, 2000b). 5

7 institutions) and not directly the economic outcomes that one wants to analyze. The unobservable variables that may affect both policies and outcomes must be controlled for. This is particularly important in equation (i), since this is a reduced form equation that summarizes the supply and demand equations that determine the market equilibrium. With this specification strategy in mind, we test a number of hypotheses derived from the literature on political economy and regulation. Hypothesis 1) Market-opening policies are negatively associated with the interventionist tradition of each country, and positively related to the weight of interest groups and the partisan ideology of the reforming country. First, policies are typically associated with institutional traditions. Deregulation policies will be more ambitious in countries with a less interventionist tradition (LaPorta et al., 1999 and 2002). Second, many policies have been observed to be partisan, i.e. different political parties, since they represent different constituencies, will implement different policies (Alesina and Rosenthal, 1995). Right wing coalitions/governments, according to this, emphasizing more free markets than redistributive policies, will be more prone to deregulate and create an environment that is favourable to private investment in telecommunications. And third, policies will be influenced by interest groups, which compete in the political arena to obtain favourable policies (see Peltzman, 1976, and Grossman and Helpman, 2001) Hypothesis 2) The setting up of truly independent regulatory agencies is a policy decision itself, which depends on the institutional endowment of each country and the interest of dominant interest groups in the outcomes of this institutional setting relative to the alternatives. The explanatory variables for equation (i) will include a number of institutional indices. These political variables influence the choice of policies (market-opening policies as well as regulatory institutions). These institutional indices will be used also in equation (ii), and could in some cases also have a direct influence in market outcomes. Using this specification, one can test for example whether regulatory independence is necessary or 6

8 redundant (and hence socially too expensive) once the country has other ways to enforce contracts and credibly commit to stable policies. Levy and Spiller (1996) and Henisz and Zelner (2000b) argue that the creation of independent agencies is one among several options available to countries that want to commit credibly not to expropriate the sunk investments that characterize network industries. Whether this option will be exercised or not depends on the institutional endowment and the structure of interest groups. Hypothesis 3) Market-opening policies have a positive effect on productivity and independent agencies have a positive effect on investment. There is a general consensus that competition in the non-natural monopoly segments of telecommunications is both possible and beneficial for social welfare, especially through improvements in incentives and productivity. Some scholars think, however, that there is a thin line that should not be crossed between promoting competition and protecting particular competitors that may not be as efficient as the incumbent firms. In addition to this argument, these scholars also warn against the danger of expropriating the sunk investments in infrastructures of dominant operators. 6 Other scholars emphasize the potential for strategic delegation into relatively pro-industry regulators, in an analogy with strategic Rogoff delegation into conservative central bankers in monetary policy (Levine et al., 2002). Pro-industry regulators (or regulators who have a duty to behave in a pro-industry way) would not expropriate sunk investments. 3. Data 3.1. Telecommunications policy variables We collected data on a number of original variables reflecting telecommunications policies and institutions in 1998 for 37 countries. This new data set, and the way we summarize it through indices, is one of the main contributions of our work. The description and measurement technique of these original variables can be found in Appendix 1. We aggregated the original variables in 4 indices, two for asymmetric deregulation and two for independence. These aggregation techniques are summarized 6 See Sidak and Spulber (1997). 7

9 below and more detail is provided in Appendix 2. The values that the indices take for each country can be found in Appendix 3. The construction of the indices can be easily replicated. Alternatively, the original variables can be combined in different ways according to the purposes of other researchers. We make the data on the observations for the original variables available. Data have been collected from web pages, legislative texts published by the different regulatory authorities, documents and working papers of the OECD and the International Telecommunications Union (ITU), studies carried on behalf of the European Commission, and articles from specialized journals. The two indices on asymmetric deregulation policies (entry and entry(pc)) aggregate information on the following policies: - The degree to which entry in the industry is subject to investment conditions of any kind. - The average of the number of mobile providers in 1996 and The method of spectrum allocation. - The existence of number portability in fixed and mobile telephony. - The existence of carrier selection and carrier pre-selection in local, long distance and international telephony. - The rules governing mobile to mobile, and fixed to mobile, interconnection rates. - The availability of local loop unbundling and rules governing the access to alternative infrastructure. We have associated a metric to each of these variables, with the lowest value for policies that are less favourable to easiness of entry and a higher value to policies that are more favourable. These values have been aggregated into two indices, namely entry and entry(pc). The difference between entry and entry(pc) is that whereas the former is an ad hoc index that just adds up the values in all the asymmetric deregulation dimensions that have been considered, the latter is chosen among four new variables that summarize all the observations in these dimensions using principal components analysis. The new variable reflects mostly the introduction of number portability in fixed telephony, the absence of investment conditions for entrants, the presence of long- 8

10 distance and international carrier pre-selection, and the introduction of local loop unbundling. For this reason, we think that this new variable describes well the degree to which regulation is asymmetrically biased in favour of entrants. Of the 37 countries for which we collected information, 33 had a separate regulatory agency in operation in 1998 (all except Chile, Japan, New Zealand and Israel). Of these, 18 had set up the regulatory agency prior to In this year, as many as 11 agencies started operating, and four of them started in The oldest agency is the FCC of the US, which started operating in 1934, and the next one at the national level was not created until 1976 in Canada. All the others were created in the 1990s. Therefore, the establishment of separate regulatory agencies is a very recent phenomenon. The two indices on regulatory independence (indep and indep(pc)) are based on information which covers the following issues: - The degree to which the regulatory agency is responsible for a number of policies, including: licensing, interconnection, tariffs, scarce resources allocation (such as spectrum frequencies and numeration plans), and universal service. - The degree to which its funding sources are independent of the government s discretion. - The rules of appointment of the head of the agency or its board. - The length of the term in office for the head of the office or the members of the board. - The rules about obligations to report to the government, parliament or another official body. We have associated a metric to each of these variables, with the lowest value for policies that give less independence to the office and a higher value to policies that give more independence. These values have been aggregated in two indices, indep and indep(pc). The difference between indep and indep(pc) is that whereas the former is an ad hoc index that just adds up the values in all the independence dimensions that have been considered, the latter is chosen out of the three new variables that summarize all the observations in these dimensions using principal components analysis. This new variable reflects mostly the regulator s capacity of setting tariffs and interconnection 9

11 charges and, to a lesser extent, its independence of the government in terms of funding and length of term in office Telecommunications performance variables Data on the performance of the telecommunications industry is obtained from the International Telecommunications Union (ITU) database. We focus on performance as measured by network penetration and productivity data. Network penetration is described as main lines per 100 inhabitants (linesinhab). We focus on the level of this variable in 1998 and This is the last year available. We also consider the rate of growth since 1998, the year for which we computed the policy measures. Productivity is measured as subscribers per employee and main lines per employee. For both we use the levels in 2000 (subworker and linesworker), the last year available, and the growth in the subscribers per worker variable between 1998 and When these variables are lagged, the data correspond to Political and institutional variables We have collected a number of political variables on the general quality of government, interest groups, ideology, institutions and the tradition of each country with regards to the state s involvement in the economy. Our ideological variable ideology has a value of one if the largest party in the government was a right wing party as of January, 1 st 1997, and a value of zero if the largest party has any other orientation. We elaborated this variable from the original Beck et al. s (2001) data set. 7 7 The original data set on ideologies by Beck et al. labels the largest party in each country s government as left, center, right or non-applicable. However, the way they allocate the left or center label to different largest parties seemed to us somehow inaccurate. For example, they attach the label left both to the Cuban and to the Clinton government in the US, whereas the Prodi administration in Italy and the center-left ruling coalition in Chile are allocated the Center label. The way they allocate the right label seemed to us more clear cut. 10

12 We have two variables reflecting the interventionist tradition of each country, i.e., the degree to which the state has an inclination to intervene in economic matters. Both of them are collected from LaPorta s web page at the Economics Department of Harvard University. One of them, legal, reports whether the legal origin of the country belongs to English Civil Law or to other more interventionist traditions, such as socialist, French Common Law, German Common Law or Scandinavian Common Law. LaPorta et al. (1999) argue that this variable proxies for the degree of interventionism of the state in economic matters, since English Civil Law was set up to protect the owners from the sovereign, whereas traditions such as the French Common Law were designed to reinforce the role of the state. The socialist tradition would be an extreme case of interventionism and the other two would be intermediate cases between English and French. We give a value of 0 to 4 in the order of more interventionist to less (so the order is socialist, French, German, Scandinavian, English). Moreover, this variable is interesting as a potential instrument because it is exogenous and uncorrelated with performance in telecommunications, since the legal origin is usually associated to colonization or conquest. The other measure of interventionism, procedures, is the number of steps that a new business has to take in order to start operating, and it is obtained from LaPorta et al. (2002). We have some variables reflecting the weight of some interest groups in the policies of interest, although this clearly is an area that can be expanded in future research. We have the number of telecommunications workers divided by the overall population in (staff) as a measure of the size of the incumbent, and the percentage of urban population (urbanpop) as a measure of the size of a social group demanding new services and hence a priori in favour of telecom liberalization 8. We have three variables reflecting the general quality of government, obtained from Kaufmann and Kraay (2002). These are regqual, goveff and rulelaw, and they are composite indices measuring, respectively, the general quality of government, government effectiveness and the rule of law. 8 Both measures correspond to

13 And we have one additional variable, instconst, which is an index of institutional constraints on executive bodies, first used in Henisz and Zelner (2000). We use the average for this index between 1945 and This index gives a measure of the ability of governments to commit themselves or their successors to policies not to expropriate investments. Table 1 reports the correlation matrix of these institutional and political variables for our observations, plus our two indices of regulator independence, indep and indep(pc). The table clearly shows that these variables are measuring different phenomena, and that not taking some of them into account may lead us to omit some important influences in the analysis. The rule of law index, the government effectiveness index and the regulatory quality index are highly positively correlated. The legal origin and the number of procedures to set up a new business are highly negatively correlated. Surprisingly, our two indices of regulatory independence are not highly correlated with any of the other institutional indices. We tackle this issue more in depth below, when we discuss our preliminary results. Table 1. Correlation between sector-specific and general regulation variables regqual indep indep(pc) goveff rulelaw legal instconst procedures regqual 1 indep indep(pc) goveff rulelaw legal instconst procedures We also have data on the GDP per capita in 1998 in dollar terms to control for the level of development in each country, which may also influence telecom performance. There is a high correlation between regulatory quality (and also government effectiveness and rule of law) and GDP per capita. The following graph points to a non-linear positive association between both: 12

14 1.82 RegQual GDPcap98 4. Econometric results 4.1. The determinants of endogenous policies Tables 2a-d show that legal origins and lagged performance are significant determinants of the entry index. Our estimations are consistent with the hypothesis that less interventionist societies tend to liberalize more, and impose a regulation which favours the incumbents to a lesser degree. Societies with better telecommunications sectors also tend to liberalize more. Interestingly, the principal components index of asymmetric deregulation, entry(pc), however, did not show any significant pattern. Table 2a. Equation (ii) Asymmetric regulation OLS estimates t-statistic Dependent Variable entry intercept legal ideology urbanpop subsworker (lagged) R-Squared Table 2b. Equation (ii) Asymmetric regulation OLS t-statistic estimates Dependent Variable entry intercept legal subsworker (lagged) R-Squared

15 Table 2c. Equation (ii) Asymmetric regulation OLS estimates t-statistic Dependent Variable entry intercept legal linesworker (lagged) R-Squared Table 2d. Equation (ii) Asymmetric regulation OLS estimates t-statistic Dependent Variable entry intercept procedures linesworker (lagged) R-Squared Ideology, however, appears to have no impact on the decision to liberalize, as shown in Table 3. Telecommunications liberalization does not appear to be a partisan policy. This is not incompatible with some aspects of the reform process being partisan. For example, privatization of the incumbent could be a partisan policy, with right wing parties more inclined to privatize. But our composite indices do not single out individual policy dimensions, and hence we are not able to make any inference on them. Table 3. Equation (ii) Asymmetric regulation OLS estimates t-statistic Dependent Variable entry intercept legal ideology linesworker (lagged) R-Squared As we saw in Table 1, our two indices of regulatory independence are not highly correlated with any of the other institutional indices, and in particular they are not correlated with overall regulatory quality. We interpret this as evidence that formal regulatory independence is compatible with different levels of general regulatory or institutional quality. However, this does not mean that regulatory independence does not show any systematic pattern. Our regression results on the determinants of independence (see tables 4a-b) show that independence is a substitute for other ways to achieve commitment not to expropriate. In particular, the index of constraints on the 14

16 executive appears to be negatively and significantly related to the creation of truly independent regulatory agencies. The sign of the ideological dummy and of the rule of law variable are also negative although not significant. This is consistent with the Levy and Spiller (1996) view of regulatory commitment and credibility. Countries achieve regulatory commitment not to expropriate investment, yielding good results in terms of industry performance, if they are able to create credible institutions that are well adapted to the institutional endowment of each country. Since institutional endowments vary across countries, the way different countries set up commitment institutions will vary. Take the cases of the UK and Chile, two countries that were among the first to successfully privatize their telecommunications incumbents and introduce competition. The UK, with its centralized system and majoritarian government has very few constraints on the executive s behaviour, so that new and special institutions, such as an independent regulator, must be put in place to achieve commitment. Table 4a. Equation (ii) Regulatory independence OLS estimates t-statistic Dependent Variable indep(pc) Intercept ideology staff rulelaw instconst R-Squared Table 4b. Equation (ii) Regulatory independence OLS estimates t-statistic Dependent Variable indep Intercept ideology staff rulelaw instconst R-Squared In addition to this, the way the independent regulator is set up takes advantage of other features of the British institutional endowment, such as the respect for contracts and the independence of the judiciary. In Chile, however, with a presidential system and coalition governments, it is very difficult to change legislation, so that commitment is achieved through very detailed legislation, which, as thought at the time of reform, would make setting up a regulatory agency redundant and hence not cost effective if there is any cost to independence (for example in terms of political legitimacy or other costs to the political principals). Hence Chile is one of the few countries in our data set that does not even have a separate telecom regulator. 15

17 Quite robustly in our regressions, the effect of the size of the incumbent (as measured by the number of telecommunications staff some years before the reform) has a positive and statistically significant effect on the decision to create a truly independent regulatory agency. This is a surprising result, and we interpret it as the incumbent preferring an independent regulator in the face of the coming liberalization, which will inevitably be associated with more interest group competition. This is consistent with the view of Henisz and Zelner (2000) on the electricity industry, where they show that incumbents lobby for the creation of constraints on investment expropriation if they foresee strong interest group competition. To sum up, the data do not reject the part of hypothesis 1 that predicts that market opening policies are related to the non-interventionist tradition of countries, nor the part of hypothesis 2 that predicts that regulator independence is determined by the institutional endowment of countries. We also find support for the part of hypothesis 2 that predicted that independence is associated to interest group pressure. In this case, we find that countries with a larger incumbent are more prone to create truly independent agencies. We conjecture that large incumbents may find that independent specialized regulators (with staff members probably recruited among previous incumbent staff) may be more easily captured than governments, and/or that large incumbents may have more to lose without an independent regulator, if the independent regulator, as a credible commitment device, contributes to alleviate the under-investment problem. This is so because larger incumbents have larger sunk investments in infrastructures. 4.2 The effects of policies We first investigate the determinants of telecommunications network penetration (lines per 100 inhabitants and growth in lines per 100 inhabitants). These are the endogenous variables usually focused on in the studies that work with the ITU data set. The following graph suggests the existence of a positive association between entry policies and telecom penetration: 16

18 Entry Lines In the regressions results, although the entry index is not significantly related to growth in network penetration, it is significantly related to network penetration in 2001 (see tables 5a-b) if liberalization is taken as exogenous. This significant relationship disappears once the endogeneity of liberalization is taken into account. Table 5a. Equation (i) Network penetration OLS estimates t-statistic Dependent Variable linesinhab intercept gdpcap entry R-Squared Table 5b. Equation (i) Network penetration IV estimates t-statistic Dependent Variable linesinhab intercept gdpcap entry R-Squared Instrumented: entry / Instrument: legal The entry variable shows the same pattern in determining the telecom network penetration, as reported in Tables 6a-b, if we control for the effect of institutional variables such as regulatory quality. Hence OLS over-estimates the contribution of the entry variable. 17

19 Table 6a. Equation (i) Network penetration OLS estimates t-statistic Dependent Variable linesinhab Intercept gdpcap entry regqual R-Squared Table 6b. Equation (i) Network penetration IV estimates t-statistic Dependent Variable linesinhab Intercept gdpcap regqual entry R-Squared Instrumented: entry Instruments: legal The independence of the regulator does not appear to be a significant determinant of network penetration with OLS, but it becomes significant at the 10% level when we take into account the endogeneity of independence through Instrumental Variable estimation, as shown in Tables 7a-d. Table 7a. Equation (i) Network penetration OLS estimates t-statistic Dependent Variable linesinhab intercept gdpcap indep R-Squared Table 7b. Equation (i) Network penetration OLS estimates t-statistic Dependent Variable linesinhab intercept gdpcap indep(pc) R-Squared Table 7c. Equation (i) Network penetration IV estimates t-statistic Dependent Variable linesinhab intercept gdpcap indep R-Squared Instrumented: indep Instruments: staff, instconst Table 7d. Equation (i) Network penetration IV estimates t-statistic Dependent Variable linesinhab intercept gdpcap indep(pc) R-Squared Instrumented: indep(pc) Instruments: staff, instconst 18

20 Next, we look at the determinants of productivity in the telecommunications sector, as measured by subscribers per employee and lines per employee. The principal components index of asymmetric deregulation has a negative impact on productivity (measured as subscribers per employee) in levels, although the significance of this estimate declines as we add variables. The same happens when productivity is measured as lines per employee, although the regression results are not reported here. Table 8. Equation (i) Productivity OLS estimates t-statistic Dependent Variable subsworker intercept gdpcap entry(pc) regqual R-Squared We checked for the effect of the ad hoc entry index on productivity, first with OLS and next with IV estimation using the legal index as instrumental variable, without any significant results. Finally, we see in Tables 9a-c that regulatory independence has a negative or non significant (when appropriately instrumented) effect on productivity. To sum up this part of the empirical analysis, we find weak support for the part of hypothesis 3 that predicts that independence contributes to alleviate the underinvestment problem. Table 9a. Equation (i) Productivity OLS estimates t-statistic Dependent Variable linesworker intercept gdpcap indep entry R-Squared Table 9b. Equation (i) Productivity OLS estimates t-statistic Dependent Variable subsworker intercept gdpcap indep entry R-Squared

21 Table 9a. Equation (i) Productivity IV estimates t-statistic Dependent Variable linesworker intercept gdpcap indep entry R-Squared Instrumented: entry, indep Instruments: legal, staff Table 9b. Equation (i) Productivity IV estimates t-statistic Dependent Variable subsworker intercept gdpcap indep entry R-Squared Instrumented: entry, indep Instruments: legal, staff 5. Conclusions In this paper, we presented new data, in the form of four indices, on entry policies and the independence of regulators for a cross section of countries. These indices take into account the multi-dimensionality of policies and institutions. In the case of independence, this moves the empirical literature on regulation one step closer to the empirical literature on Central Bank independence in monetary policy, where the use of independence indices as opposed to dummy variables has become common practice. These indices were combined with a comprehensive set of performance, institutional and political data to quantify both the determinants and the impact of telecommunications policies. We found that liberalization policies which favour entrants are negatively associated with the degree to which countries have an interventionist tradition, but not with the partisan ideology of reforming countries per se. We also found that countries where the institutional endowment constrains less the behaviour of the executive bodies, and countries with a stronger incumbent, are more prone to create truly independent regulatory agencies. The effect of the institutional endowment is consistent with the previous literature on regulatory institutions. The positive association between incumbent size and independent regulators has not been observed before and may seem puzzling. We conjecture that large incumbents may find that independent specialized regulators (with staff members probably recruited among previous incumbent staff) may be more easily captured than governments, and/or that large incumbents may have more to lose without an independent regulator, if the 20

22 independent regulator (as a commitment device) contributes to alleviate the underinvestment problem. This is so because larger incumbents have larger sunk investments in infrastructures. We found weak evidence that the creation of truly independent regulatory agencies has a positive effect on network penetration when we take into account the endogeneity of independence. There is no evidence, with this preliminary data set, of a significant effect (positive or negative) of market opening policies on any of the performance variables used in this study. However, a positive significant effect on network penetration would be predicted with the same data set if the endogeneity of market opening policies was not taken into account. This illustrates (along the lines of Röller and Duso, 2002, and Besley and Case, 2000) that very different results may be (incorrectly) obtained if the endogeneity of policies is not taken into account. Despite the importance of creating politically sustainable regulatory systems, the establishment of separate regulatory agencies in telecommunications is a very recent phenomenon. Equivalently, it is probably too early to reach any final conclusion on the effects of different market opening policies. Our results on the determinants of policies and institutions, however, point at some systematic relationships that fit well with some of the theoretical literature on institutions. Further research may also explore in a more systematic way the interaction between market opening policies and institutional design. 21

23 References Alesina, Alberto; Rosenthal, Howard (1995), Partisan Politics, Divided Government and The Economy, Cambridge University Press, Cambridge, MA. Beck, Thorsten; Clarke, George; Groff, Alberto; Keefer, Phillip; Walsh, Patrick (2001), New Tools in Comparative Political Economy, World Bank Economic Review, 15: Besley, Timothy; Case, Anne (2000), Unnatural Experiments? Estimating The Incidence of Endogenous Policies, The Economic Journal, 110: F672-F694. Boylaud, Oliver; Nicoletti, Giuseppe (2000), Regulation, Market Structure and Performance in Telecommunications, OECD Econ. Dept. working paper 237, Paris. Fink, Carsten; Mattoo, Aaditya; Rathindran, Randeep (2002), An Assessment of Telecommunications Reform in Developing Countries, The World Bank, mimeo. Grossman, Gene M.; Helpman, Elhanan (2001), Special Interest Politics, Cambridge: The MIT Press. Henisz, Witold J.; Zelner, Bennet A. (2000a), The Institutional Environment for Telecommunications Investment, Journal of Economics and Management Strategy. Henisz, Witold J.; Zelner, Bennet A. (2000b), Political Constraints, Interest Group Competition and Infrastructure Investment in The Electric Utility Industry: A Cross-National Study, mimeo. Kaufmann, Daniel; Kraay, Aart (2002), Growth without Governance, mimeo, The World Bank, mimeo. La Porta, Rafael; López de Silanes, Florencio; Shleifer, Andrei; Vishny, Robert (1999), The Quality of Government, Journal of Law, Economics and Organization, 15(1): La Porta, Rafael; López de Silanes, Florencio; Shleifer, Andrei; Vishny, Robert (2002), The Regulation of Entry, mimeo. Levine, Paul; Stern, Jon; Trillas, Francesc (2002), Independent Utility Regulators: Lessons from Monetary Policy, mimeo. Levy, Brian; Spiller, Pablo T. (1996), Regulation, Institutions, and Commitment: Comparative Studies of Telecommunications, Cambridge University Press. 22

24 Li, Wei; Zhen-Wei Qiang, Christine; Colin Xu, Lixin (2002), The Political Economy of Privatization and Competition: Cross-Country Evidence from The Telecommunications Sector, Journal of Comparative Economics, 30(3). Peltzman, Sam (1976), Toward a More General Theory of Regulation, Journal of Law and Economics, 19: Roller, Lars-Hendrik; Duso, Tommaso (2001), Towards a Political Economy of Industrial Organization: Empirical regularities from Deregulation, mimeo. Ros, Agustín J. (2002), The Impact of The Regulatory Process and Price Cap Regulation in Latin American Telecommunications Markets, mimeo. Sidak, Gregory; Spulber, Daniel (1997), Deregulatory Takings and The Regulatory Contract, Cambridge University Press, Cambridge, MA. Wallsten, Scott J. (2001), An Econometric Analysis of Telecom Competition, Privatization, and Regulation in Africa and Latin America, The Journal of Industrial Economics. 23

25 Appendix 1: Original policy variables. Definition and measurement 9 Investment conditions imposed on entrants: equals 0 if the entry to the industry is subjected to investment conditions of any kind and 1 otherwise. If there are no entrants, the value is set to 0. Average Number of Mobile Providers: average of the number of providers that were in operation in 1996 and Number Portability. Fixed Telephony: equals 0 if number portability in fixed telephony is not possible and 1 otherwise. Carrier Selection. Local: equals 0 if carrier selection of the local operator is not possible and 1 otherwise. Carrier Selection. Long Distance and International: equals 0 if the carrier selection of the long distance operator (national & international) is not possible and 1 otherwise. Carrier pre-selection. Local: equals 0 if carrier pre-selection of the local operator is not possible and 1 otherwise. Carrier pre-selection. Long distance and international: equals 0 if carrier pre-selection of the long distance operator (national & international) is not possible and 1 otherwise. Year of establishment of effective operation: equals 0 if the regulatory authority is a department of the government and grows from to as the year of establishment is back in time. Private Ownership of the incumbent (%): percentage of the incumbent that is not owned directly by the government. Local Loop Unbundling Availability: equals 0 if local loop unbundling is not available and 1 otherwise. Wireless Local Access licensing: equals 0 if there are no licences for Wireless Local Access and 1 otherwise. Cable restrictions imposed on incumbents: equals 0 if incumbents have no restrictions to cable ownership and 1 otherwise. Method of Spectrum Allocation: equals 0 if the mobile industry is under monopoly, 1 if the licensing process is on a first come first served basis, 2 if the spectrum allocation 9 Unless otherwise stated, the measurement refers to the situation at the beginning of The original data on which the indices are based is available upon request. 24

26 is done through comparative tenders, 3 if it is done through competitive tenders with a financial offer, and 4 if it is done through auctions. Licensing: equals 1 if the regulator has the power to grant licences and 0 if it is a function carried out only by a ministry. In case the ministry is the only regulator, this variable is set to 0 as well. Interconnection: equals 1 if the regulator has the power to establish and administrate interconnection regimes and 0 in the same situations as in the previous variable. Tariffs: equals 1 if the regulator can determine regulated tariffs and 0 in the same situations as the previous variable. Scarce Resources: equals 1 if the regulator can administrate scarce resources, such as spectrum frequencies and numeration plans, and 0 in the same situations as before. Universal Service: equals 1 if the regulator can establish and administrate a universal service and 0 in the same situations as before. Funding: equals 0 if the regulator gets its funds from the government budget, 1 if it also gets fees from the operators and 2 if the funding is only through fees paid by the operators. Appointed by: equals 0 if the head of the regulatory authority is appointed directly by the government, 1 if he/she is appointed by the government and the legislature and 2 if he/she is appointed only by the legislature. In case the regulatory authority is a department of the government, it takes the value of 0. Length of term: years of the term in office for the regulator. If the regulatory authority is a department of the government or its term is not defined, the value is set to 0. Reporting to: equals 0 if the regulatory authority has to report to the government, 1 if it has to report to the government and to the legislature, 2 if it has to report only to the legislature and 3 if it reports to no one. Appendix 2: Indices Construction A2.1. Entry and indep The indices entry and indep use each of them a number of original variables in the following way. First, the original variables are re-coded, so that each of the observations can be measured on a 0-1 range. This is done by dividing the original metric for each observation by the maximum value of the variable (for example, if Spain has a value of 2 in method of spectrum allocation the re-coded value will be 2/4=0.5, where 4 is the 25